Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 2 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/12/2020   22:14:22   (   0.37,-128.34) (  -0.60,-132.66)  492.93                80
 02/13/2020   21:58:18   (   0.36,-128.37) (   0.40,-128.13)   26.99                80
 02/16/2020   09:58:43   (  -0.36,-128.43) (  -0.28,-128.88)   50.78                80
 02/17/2020   09:42:38   (  -0.35,-128.46) (  -1.28,-124.35)  468.55                80
 02/18/2020   22:01:56   (   0.36,-128.51) (   0.13,-129.66)  131.08                80
 02/19/2020   21:45:51   (   0.35,-128.53) (   1.13,-125.13)  388.14                80
 02/21/2020   10:04:59   (  -0.36,-128.56) (   0.05,-130.40)  209.72                80
 02/22/2020   09:48:55   (  -0.35,-128.59) (  -0.95,-125.87)  309.18                80
 02/23/2020   22:08:12   (   0.36,-128.63) (  -0.20,-131.18)  291.04                80
 02/24/2020   21:52:08   (   0.35,-128.65) (   0.81,-126.65)  227.88                80
 02/26/2020   10:13:56   (  -0.36,-128.68) (   0.37,-131.92)  369.97                80